Lws 94V0 PCB Board LiFePO4 Battery Management System BMS 2s 3A 5A Smart BMS for Lithium Battery

Shenzhen Li-ion Battery Bodyguard Technology Co.,LTD

PCM Specifications For 7.4V(2S) Li-ion Battery Packs

Model:LWS-2S5A-378(2S)

No.

Test item

Criterion

1

Voltage

Charging voltage

DC:8.4V  CC/CV

Balance voltage for single cell

/

2

Current

Balance current for single cell

/

Current consumption

≤20uA

Max continuous charging current

5A

Max continuous Discharging current

5A

3

Over charge Protection

Over charge detection voltage for single cell

4.25±0.025V

Over charge detection delay time

0.5S-1.5S

Over charge release voltage for single cell

4.05±0.05V

4

Over discharge protection

Over discharge detection voltage for single cell

2.8±0.08V

Over discharge detection delay time

50mS-150mS

Over discharge release voltage for single cell

3.0±0.1V

5

Over current protection

Over current detection voltage

200±30mv

Over current detection current

10±2A

Detection delay time 

5ms-15ms

Release condition

Cut load

6

Short protection

Detection condition

External short circuit

Detection delay time

200-500us

Release condition

Cut load

7

Resistance

Protection circuitry(MOSFET)

≤50mΩ

8

Temperature

Operating Temperature Range

-40~+85ºC

Storage Temperature Range

-40~+125ºC

3.FAQ
Q: How do I judge what material my battery is ?
A: Please take a look at the battery body.if the normal voltage of your battery shows as 3.2V,the battery will be LiFePo4.If the normal voltage of your battery shows as 3.6V or 3.7V, the battery will be Li-ion or Li-polymer battery. you can also ask battery manufacturer the material of battery.

Q: Can I use this protection circuit board for my battery?
A: Can use this protection circuit board, or not?
There are 2 questions:
How much cells in series is your battery pack?
The protection circuit board you need to buy must be same cells in series as your battery pack.

Q: What material is your battery?
A:Only the LiFePo4 battery has different electric parameter from other battery, so if you need buy the protection circuit board for LiFePo4 battery , Please let us know firstly.

Q: Do we need cell balance or not?
A: The function of balance : Since battery is made of many pcs of cells in parallel and in series, the cells can't be the same as no two people in the world is the same , so can only put in group with similar performance is not without balance function

Q: Do you have Minimum Order Requirement (MOQ)?
A: No, We don't have MOQ, Different customer have different requirement ,We can provide various capacity and size as per your requirements,Also ODM / OEM is welcome.

About your products, just tell us the relative voltage/ cells/ current A or equipment etc,we will help to recommend the most suitable products for you.